The GNU nano is a superb Linux text editor. And you absolutely should use it. It’s not a fully-featured IDE nor does it claim to be. If you’re looking for a fast, lightweight editor that is usually installed by default (or available in the standard repos of every distro) then you should take a look at nano. I use nano for all my processional Linux administration and content creation. With a few tweaks you can turn nano into a capable editor that will meet your everyday needs.